ASP.NET创建和删除目录

ory方法创建该目录
                dircre.CreateDirectory(dir)
                ''弹出对话框，提示创建成功！
                Response.Write( "<script> alert(''Testfolder目录已经成功创建！'');</script>")
            Else
                Response.Write( "<script> alert(''Testfolder目录已经存在！'');</script>")
            End If
        Catch ex As Exception
            Response.Write( "程序执行出,信息描述如下：<br>" & ex.Message)
        End Try

End Sub
    ''删除目录过程
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        ''声明Directory类
        Dim dircre As System.IO.Directory
        ''声明文件目录的路径，改路径为物理绝对路径
        Dim dir As String = Server.MapPath( ".") + "\Testfolder\"
        Try
            ''判断该文件目录是否存在
            If dircre.Exists(dir) Then
                ''利用Directory类的CreateDirectory方法删除该目录
                '' Directory类的Delete方法只能删除空目录，当该目录内有文件时，删除就会出错！
                dircre.Delete(dir)
                '' dircre.CreateDirectory(dir)
                ''弹出对话框，提示创建成功！
                Response.Write( "<script> alert(''Testfolder目录已经成功删除！'');</script>")
            Else
                Response.Write( "<script> alert(''Testfolder目录不存在！'');</script>")
         &n